COX7C (Cytochrome C Oxidase Subunit 7C): COX7C is a gene that encodes a subunit of cytochrome c oxidase, a critical enzyme complex located in the mitochondria. This complex plays a central role in the electron transport chain, an essential step in cellular respiration. By facilitating the transfer of electrons and protons, COX7C helps drive the production of cellular energy in the form of adenosine triphosphate (ATP).